However none of my critics have yet produced references that show "capitalism" being used interchangeably with "free enterprise system" before the Powell Memo.
Which AFAIK was when that usage began, as a strategic move. Implicitly redefining anticapitalists - opponents of monopoliaed industries giving rise to neo-feudalism - as enemies of "free enterprise" and "free markets" (free now of regulation, not of economic rents, as defined by Adam Smith).
(2/2)
indeed, and the funniest part of all of this is the flea market fundamentalist just happened to turn out the most ardent anti-capitalist ever (to use the meaning it has come to have).